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Product Code M2220A1-250mg
Price £420 ex. VAT

5TCzBN is another sky-blue emitter from the cabzolyl benzonitrile (CBN) family that is used in TADF-OLED devices with great performance.

Acting as an encapsulation shell to the luminophore in 5TCzBN, tert-butyl units are believed to reduce the singlet–triplet splitting (ΔEST) of the compounds, which gives rise to a more efficient reverse inter-system crossing (RISC) process by effectively separating the neighbouring molecules.

General Information

CAS number n.a.
Full name 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile
Chemical formula C107H120N6
Molecular weight 1490.13 g/mol
Absorption* λmax 420 nm in toluene
Fluorescence λem 480 nm in toluene
HOMO/LUMO HOMO = 5.75 eV, LUMO = 2.74 eV, T1 = 2.60 eV [1]
Classification / Family Carbazole, Phthalonitrile, TADF materials, Blue dopant materials, Sublimed materials

* Measurable with an optical spectrometer, see our spectrometer application notes.

Product Details

Purity Sublimed* >99.0% (1H NMR)
Melting point Tg = 325 °C (lit.)
Appearance Yellow powder/crystals

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.

Chemical Structure

Chemical Structure of 2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile (5TCzBN).

Device Structure(s)

Device structure ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCBP:5TCzBN (20 wt%) (30 nm)/DpyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour Sky-blue blue light emitting device
Max. EQE 21.2%
Max. Power Efficiency 56.1 Im/W
Device structure ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/30 wt% 5TCzBN: DMIC-TRZ (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [3]
Colour Blue blue light emitting device
Max. EQE 19.2%
Max. Power Efficiency 33.8 Im/W
Device structure ITO/HATCN/NPB (30 nm)/TCTA (10 nm)/5TCzBN: mCBP (30 nm)/DPyPA:Liq (1:1, 30 nm)/Al/LiF (0.5 nm) [4]
Colour Blue blue light emitting device
Max. EQE 21.3%
Half-life Time 12,873h @ 100cd/m2

*For chemical structure information, please refer to the cited references.

MSDS Documentation



Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2220A1 250 mg £420
Sublimed (>99.0% purity) M2220A1 500 mg £700
Sublimed (>99.0% purity) M2220A1 1 g £1150

Literature and Reviews

  1. Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability, D. Zhang et al., Mater. Horiz., 3, 145-151 (2016); doi: 10.1039/C5MH00258C.
  2. Highly efficient and stable blue thermally activated delayed fluorescence emitters, D. Zhang et al., SPIE (2016); DIO: 10.1117/2.1201611.006797.
  3. Perspective on carbazole-based organic compounds as emitters and hosts in TADF applications, B. Wex et al., J. Mater. Chem. C, 5, 8622 (2017); DOI: 10.1039/c7tc02156a.
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